I'd have to say either Tate n Liza, Dad, or Flannery.
Emerald: I did pretty good on these gyms, all thanks to my precious Sableye -tackle hug-
Ruby: Not so much... Flannery was downright annoying with nonstop ember on my Blaziken (yes, amber was a blaziken already) and Dad, I had to hate on him because he finished off my last resort shiny crobat who I love so much. GRR.